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S. LEWIS & G. H. BLAKBS'LBY.

Patented Jan. 9, 1883.Y

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FFECF@ CHARLES S. LEWIS, F VVATERBURY, AND GILBERT H. Bll/AKFISLEY, OF BRISTOL, CONNECTICUT.

LOCK.

SPECIFICATION forming part of Letters Patent No. 270,318, dated January 9, 1883.

l application nieu July 13,1882. (No moua.)

To all 'whom it may concern:

Beit known that we, CHARLESS. LEWIS, of Waterbury, in the county of New Haven and State of Connecticut, and GILBERT H.BLAKES LEY, of Bristol, in the count-y ot' Hartford and State of Connecticut, have invented certain new and useful Improvements in Locks; and' we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which it pertains to make and use the saine.

Our invention relates to an im povement on locks, and more particularly to that class thereof depending in operation upon the actuation of a series of suitably-arranged pins, the object ofthe present invention being to improve the construction of the pin-case and cylinder, to ascribe a complete revolution to the cylinder and key, and to provide an improved lazy lug.

With these objcctsin view our invention consists in certain details of construction audcoinbinatious ot' parts, as will be hereinafter described, and pointed ont in the claims.

ln the accompanying drawings, Figure lis a view in perspective ot' a lock constructed in accordance with our invention. Fig. 2 is a view thereof in vertical cross-section. Fig. 3 is a detached view ofthe cylinder. Fig.` et is a detached view of the piucase. Fig. 5 illustrates the several manipulations to which a suitable blank is subjected during the process of forming the cylinder, and Fig. 6 illustrates lug, and Fig.

the several manipulations to which a suitable blank is subjected during the process of forming the pin-case. Fig. 7 is a view of thelazy- 8 is a piucase for a modified form of lock.

The back plate, A, and the faceplate B, which are integral -with each other, are preferably made of iron; but brass, steel, or other suitable metal may be employed in lieu thereof. rlhe lock-bolt C is guided in its movements by a two-armed plate, D, attached to the rear face of the back plate and by a pin, E, secured to the lower arm of the said plate D and entering an aperture in the upturned end of the bolt-shank F, one edge of which is appropriately cutaway to receive the arm G of the lazylug H, which is inclosed in the pin-case I, the arm G extending through a slot, J, formed in the inner end thereof. The said lug is actuated in operating the lockbolt by the engage nient of the closed end of the key-pin chamber subjecting suitable sheet-metal blanks to approprate manipulation. i

ln forming the cylinder L a blank of suitable dimensions is struck up into the form designated by O in Fig. 5 of the drawings. A second operation causes it to assume the shape designated by P in the same figure. A third manipulation develops the form Q, while a fourth operation results in the completed cylinder K.

ln forming the pin-case R a suitable blank is struck up into the form designated by S in Fig. 6 of the drawings. A second operation brings the blank into the forni designated by T, while a third operation develops the completed pin-case R. The semicircular flutings U, formed in the blanks of the cylinders, as well as those of the pincases, constitute, when brought together, circular chambers to receive the pins V and their actuatingsprings W and the key-pins X, which are operated by the key of ,wherein it is shown as being adapted to receive two independent sets oi springs and pins to operate in conjunction with a single set of' key-pins located in a cylinderv similar to that represented by K. This modified pin-case may be made of one ortwo pieces of metal. We would therefore have it understood that we do not limit ourselves to the exact construction herein shown and described, but hold ourselves at liberty to make such slight changes and alterations as fairly fall within the spirit and scope ofour invention.

Having fully described our invention, what i We claim as new, and desire to secure by Letters Paten t, is-

1. ln a-lock, a cylinder formed of struck-up sheet metal, the central portion ot' the blank beine,F provided with two series of iiutings, which, being i'olded together, constitute pinreceptaeles. while the ends of the blank are bent to inclose the pin-receptacles and form the cylinder, substantially as set forth. y

2. In a lock, a'pin-case made of struck-up sheet metal, the central portion of the sheetmetal blank constituting the cylindrical por- 25v tion of the pin-case, While-the ends ofthe blank are uted to form the pin-receptacles, substantially as set forth.

3. In a lock, the combination, with a cylinder the blank of which is folded Within the 3o cylinder to constitute pin -receptacles, said folded portion being' partially cut away at. its inner end, of alazy-luglocated against the inner end ofthe cylinder, said lazy-lug being provided with a boss, which enters the space be- 35 tween the cylinders and the inclosed portion, substantially as set forth.

In testimony whereof we have signed this specification in the presence ot' two subscribing witnesses.

CHARLES S. LEWIS. GILBERT H. BLAKESLEY.

Witnesses J. H. WAY, CHAs. GRAY. 

